This study aimed to develop the teacher training programs to prevent and treat of game addiction. First, we analyzed the existing training programs concerning game addiction and searched for various strategies applicable to game addiction prevention and treatment education programs. On this ground, training programs were divided into three courses that were the prevention program for normal students, the treatment program I for students in the potential-risk group, and the treatment program II for those in the high-risk group. For the prevention program, commonalities were drawn and developed from the existing studies and training programs; and for treatment programs, game addiction clinic centers were analyzed to draw various useful strategies and contents. We also developed the details of those programs in consultation with experts. As a result of content validity about the developed teacher training program to prevent and treat of game addiction, this program was generally appropriate and acceptable. We expect that the developed programs help to treat a student who has game addiction effectively.